linux-kernel - [PATCH v2 RESEND] tpm: export tpm2_sessions

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Message-ID: <20240905085219.77240-2-kexybiscuit@aosc.io>
Date: Thu,  5 Sep 2024 16:52:20 +0800
From: Kexy Biscuit <kexybiscuit@...c.io>
To: stefanb@...ux.ibm.com,
	jarkko@...nel.org,
	linux-integrity@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org
Cc: linux-kernel@...r.kernel.org,
	mpe@...erman.id.au,
	naveen.n.rao@...ux.ibm.com,
	zohar@...ux.ibm.com,
	Kexy Biscuit <kexybiscuit@...c.io>,
	stable@...r.kernel.org,
	kernel test robot <lkp@...el.com>,
	Mingcong Bai <jeffbai@...c.io>
Subject: [PATCH v2 RESEND] tpm: export tpm2_sessions_init() to fix ibmvtpm building

Commit 08d08e2e9f0a ("tpm: ibmvtpm: Call tpm2_sessions_init() to
initialize session support") adds call to tpm2_sessions_init() in ibmvtpm,
which could be built as a module. However, tpm2_sessions_init() wasn't
exported, causing libmvtpm to fail to build as a module:

ERROR: modpost: "tpm2_sessions_init" [drivers/char/tpm/tpm_ibmvtpm.ko] undefined!

Export tpm2_sessions_init() to resolve the issue.

Cc: stable@...r.kernel.org # v6.10+
Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202408051735.ZJkAPQ3b-lkp@intel.com/
Fixes: 08d08e2e9f0a ("tpm: ibmvtpm: Call tpm2_sessions_init() to initialize session support")
Signed-off-by: Kexy Biscuit <kexybiscuit@...c.io>
Signed-off-by: Mingcong Bai <jeffbai@...c.io>
---
V1 -> V2: Added Fixes tag and fixed email format
RESEND: The previous email was sent directly to stable-rc review

 drivers/char/tpm/tpm2-sessions.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/tpm/tpm2-sessions.c b/drivers/char/tpm/tpm2-sessions.c
index d3521aadd43e..44f60730cff4 100644
--- a/drivers/char/tpm/tpm2-sessions.c
+++ b/drivers/char/tpm/tpm2-sessions.c
@@ -1362,4 +1362,5 @@ int tpm2_sessions_init(struct tpm_chip *chip)
 
 	return rc;
 }
+EXPORT_SYMBOL(tpm2_sessions_init);
 #endif /* CONFIG_TCG_TPM2_HMAC */
-- 
2.46.0